Discharging preparation



Patented Nov. 29, 1932 umran STATES PATENT oF-FIcE.

GUSTAV REDCDELIEN, or nnrrzre, HANS LANGE, or DESSAU IN ANHALT, rmani) FIsoHEss R, or FRANKIEORT-ON-THE-MAIN-FECHENHEIM, N r nn u nnnn vn, or FRANKFQRT-oN-TIaE-MAIN, GERMANY, ASSIGNOBS To ennnnnn n rnr n WORKS, me, or NEW YORK, N. Y., A CORPORATION OFDELAWARE DISCHARGING PREPARATION No Drawing. Application filed May 18, 1931,5eria1 No. 538,388, and in Germany April 1 6, 1930.

Our present invention relates to an improvement in the process of discharging dyeings and more particularly to a new compound having outstanding good discharging properties.

It is Well known to use in discharging of dyeings quaternary ammonium bases or their sulfonic acids as an assistant. Although these products found on the market have served to improve the art of discharging dyeings,

or the substitution products of these compounds, that means, of the free bases, the corresponding ammonium chlorides or sulfonic acids either individually or in combination with other well-known discharging compounds to discharge dyeings hitherto held to be undischargeable. These new discharging compounds may be used in an alkaline, a neutral or acid medium.

' The new compounds are easily accessible by condensing in the known manner a dialkyl aryl amine of the benzene series with 1 chloro-l-methylnaphthalene of the formula and by sulfonating the condensation product obtained, if desired.

In the case of dimethyl aniline, for instance, this condensation occurs according to the following equation:

1 T e mpounds co ered by th g n ra formula given above, are of outstanding und the trade-names lnclanth ie, H l

done, gol or Hydrone dyese lo i g examples e o s ate our invention without limiting it.

Example 1.On the goods dyed with a vat dye, for instance, with the difficultly dischargeable Indanthrene-dark-blue BO (see Schultz, Farbstofitabellen, 5th edition, No. 763) a discharging preparation is printed having the following composition ams gum r:-.rrr:rrrr-rr-fw' -f'rf V f lO0O-r.-I-.-,,-.1-r1'-- V Glycerin 8 0 Rongalit C (cf. Beilstein, Handbuch der Organischen Chemie,

4th edition, Vol. I, page 577 1 50 Sulfonated d-imethyl phenyl 1 naphthomethyl ammonium hydroxide 175-250 Potassium carbonate or the corresponding quantity of caustic soda. 80- 30 Triethanol amine O- 40 After havingprinted the discharging preparation and after drying, the goods are bonate or caustic soda, soaped for about A hour and finally washed with water.

Example 2.The goods dyed with indigo or with another vat dye are printed with a discharging preparation containing Grams British gum 1:1 200 Tragacanth 65: 1000 250 Glycerin 80 Paste of zinc white 1-: l 0-100 Sulfonated dimethyl phenyl-lnaphthomethyl ammonium hydroxide 175-250 Potassium carbonate or the corresponding quantity of caustic soda- 30 80 Triethanol amine 40 1000 The further treatment is carried out as indicated in Example 1. V

Example 3.On dyeings obtainable with the aid of vat dyes, the following discharging preparation is printed:

The further treatment is carriedout as indicated in Example 1. I V

Emample 1;.-On goods dyed with sulfu dyes as, for instance, immedial green G extra (Schultz, Farbstofitabellen, 5th ed1- tion, N o. 746) or immedial-indone R R conc. (Color Index No. 959) a'preparation is printed having the following composition:

. Grams British gum paste 1:1- 350 Zinc white 1 :1 100 Glycerin 80 Water 100 Sulfonated dimethyl phenyl-l-naphthomethyl ammonium hydroxide 260 Potassium carbonate 60 Triethanol amine 40 The steaming and the after-treatment is carried out as indicated in Example 1. 7

When adding tothe' discharging preparationsv mentioned in the examples, a dye which is'fast to-discharging, variegated effects are obtainable.

- As mentioned above, our invention is not limited to the foregoing examples. Thus, for instance, we may use an unsulfonated quaternary dialkyl ammonium compound of the benzene series containing in its molecule the radical either in form of the free base or as a watersoluble salt as, for instance, the chloride. Other additions, well known in the art, may

be employed in preparing the paste used for printing on the material to be discharged.

What we claim is:

1. A process for discharging dyeings which comprises treating the dyeings with a preparation containing a quaternary dialkylphenyl 1 methyl naphthalene ammonium compound.

2. A process for discharging dyeings which comprises treating the dyeings with a preparation containing a quaternary dimethylphenyl l methyl naphthalene ammonium compound.

3. A process for discharging dyeings which comprises treating the dyeings with a preparation containing sulfonated dimethylphenyl 1 methyl naphthalene ammonium hydroxide.

4. A discharging preparation containing a quaternary diaIkyLphenyl-1 -methyl-naphthalene compound.

. 5. A dischargingpreparation containing a quaternary dimethyl-phenyLl -methyl-naphthalene compound.

6. A discharging preparation containing sulfonated dimetliyl-phenyl-1 -methyl-naphthalene ammonium hydroxide.

7. As a new discharging compound sulfonated dimethyl g phenyl 1 methyl-naphthalene ammonium hydroxide.

In testimony whereof, we affix our signatures.

GUSTAV REDDELIEN. HANS LANGE. ALFRED FISCHESSER. HERMANN FREUND. 

